MY120933A - Method for logging an earth formation using recycled alpha data - Google Patents

Method for logging an earth formation using recycled alpha data

Info

Publication number
MY120933A
MY120933A MYPI97001994A MYPI9701994A MY120933A MY 120933 A MY120933 A MY 120933A MY PI97001994 A MYPI97001994 A MY PI97001994A MY PI9701994 A MYPI9701994 A MY PI9701994A MY 120933 A MY120933 A MY 120933A
Authority
MY
Malaysia
Prior art keywords
oil
volume
determining
subsequent
cow
Prior art date
Application number
MYPI97001994A
Inventor
James Hemingway
Original Assignee
Schlumberger Technology Bv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Technology Bv filed Critical Schlumberger Technology Bv
Publication of MY120933A publication Critical patent/MY120933A/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/04Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G01V5/08Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays
    • G01V5/10Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
    • G01V5/101Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources and detecting the secondary Y-rays produced in the surrounding layers of the bore hole

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A METHOD FOR DETERMINING A CHARACTERISTIC OF AN EARTH FORMATION TRAVERSED BY A BOREHOLE (12) PRECISELY MONITORS THE HYDROCARBON SATURATION CHANGE DURING PRODUCTION OF AN OIL FIELD. FOR AN INITIAL LOGGING PASS, INELASTIC GAMMA RAY SPECTRA ARE DETECTED IN RESPONSE TO NEUTRONS IRRADIATING THE FORMATION AND MATERIALS IN THE BOREHOLE (12). AN ENERGY WINDOW IS SELECTED TO PROVIDE A CARBON/OXYGEN RATIO (COW) FOR DETERMINING A VOLUME OF OIL. A CARBON/OXYGEN RATION IS ALSO EXTRACTED FROM THE INELASTIC ENERGY SPECTRA (COR) FOR DETERMINING A VOLUME OF OIL. THE LINEAR CORRELATION BETWEEN THE COW DETERMINE THE VOLUME OF OIL AND THE COR DETERMINED VOLUME OF OIL IS USED TO DERIVE A BASELINE Α FOR A SUBSEQUENT LOGGING PASS INELASTIC GAMMA RAY SPECTRA ARE DETECTED AND AN ENERGY WINDOW IS SELECTED TO PROVIDE A SUBSEQUENT CARBON/OXYGEN RATIO (COW) FOR DETERMINING A SUBSEQUENT VOLUME OF OIL. BASELINE Α IS ADDED TO THE SUBSEQUENT VOLUME OF OIL TO IMPROVE THE PRECISION OF MEASUREMENT.
MYPI97001994A 1996-05-10 1997-05-07 Method for logging an earth formation using recycled alpha data MY120933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1752896P 1996-05-10 1996-05-10

Publications (1)

Publication Number Publication Date
MY120933A true MY120933A (en) 2005-12-30

Family

ID=21783112

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI97001994A MY120933A (en) 1996-05-10 1997-05-07 Method for logging an earth formation using recycled alpha data

Country Status (15)

Country Link
US (1) US5777323A (en)
AU (1) AU708309B2 (en)
BR (1) BR9703098B1 (en)
DZ (1) DZ2226A1 (en)
EG (1) EG21134A (en)
GB (1) GB2312951B (en)
ID (1) ID19665A (en)
IE (1) IE970340A1 (en)
MA (1) MA24249A1 (en)
MY (1) MY120933A (en)
NO (1) NO972158L (en)
NZ (1) NZ314776A (en)
OA (1) OA10482A (en)
TN (1) TNSN97079A1 (en)
TR (1) TR199700362A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064063A (en) * 1997-11-06 2000-05-16 Western Atlas International, Inc. Method for determining thermal neutron capture cross-section of earth formations using measurement from multiple capture gamma ray detectors
WO2011094405A2 (en) * 2010-01-28 2011-08-04 Baker Hughes Incorporated Time dependent neutron-gamma spectroscopy
US8853618B2 (en) * 2010-01-28 2014-10-07 Baker Hughes Incorporated Time dependent measurement of formation properties using pulsed neutron generators
CN112302622B (en) * 2020-10-29 2022-06-17 大庆油田有限责任公司 Method for comprehensively explaining residual oil saturation by pulse neutron full-spectrum logging

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282095A (en) * 1963-09-03 1966-11-01 Pan American Petroleum Corp Logging oil saturation in reservoir
US3886355A (en) * 1971-05-24 1975-05-27 Dresser Ind Method and apparatus for logging well boreholes with gamma rays from the inelastic scattering of fast neutrons
US3993902A (en) * 1975-03-31 1976-11-23 Chevron Research Company Radioactive logging for determining oil saturation in a reservoir
US4492864A (en) * 1981-07-31 1985-01-08 Texaco Inc. Neutron well logging
US4786796A (en) * 1986-10-06 1988-11-22 Schlumberger Technology Corporation Method for determining formation characteristics with enhanced vertical resolution
US4909075A (en) * 1986-10-06 1990-03-20 Schlumberger Technology Corporation Method for determining formation characteristics with enhanced statistical precision without degrading the vertical resolution or with enhanced vertical resolution
US4794792A (en) * 1986-10-06 1989-01-03 Schlumberger Technology Corporation Method for determining formation characteristics with enhanced vertical resolution
US4937446A (en) * 1988-06-07 1990-06-26 Schlumberger Technology Corporation Carbon/oxygen well logging method and apparatus
US5045693A (en) * 1988-06-07 1991-09-03 Schlumberger Technology Corporation Carbon/oxygen well logging method and apparatus
US5055676A (en) * 1990-05-09 1991-10-08 Schlumberger Technology Corporation Method for determining oil and water saturation in earth formation surrounding a borehole

Also Published As

Publication number Publication date
OA10482A (en) 2002-04-12
GB2312951B (en) 1998-07-08
NO972158D0 (en) 1997-05-09
DZ2226A1 (en) 2002-12-03
ID19665A (en) 1998-07-30
BR9703098A (en) 1998-09-08
MA24249A1 (en) 1998-04-01
GB9709153D0 (en) 1997-06-25
BR9703098B1 (en) 2010-10-05
AU708309B2 (en) 1999-07-29
AU2014597A (en) 1997-11-13
NZ314776A (en) 1999-03-29
US5777323A (en) 1998-07-07
TR199700362A2 (en) 1998-08-21
MX9703403A (en) 1997-11-29
EG21134A (en) 2000-11-29
GB2312951A (en) 1997-11-12
NO972158L (en) 1997-11-11
TNSN97079A1 (en) 1999-12-31
IE970340A1 (en) 1997-11-19

Similar Documents

Publication Publication Date Title
US4937446A (en) Carbon/oxygen well logging method and apparatus
EP0119113B1 (en) Method and apparatus for determining borehole and formation constituents
CA2196636A1 (en) Method and Apparatus for Determining Density of Earth Formations
EP0484244A2 (en) Method and apparatus for borehole correction in capture gamma ray spectroscopy measurements
CA2230919A1 (en) Method for determining density of earth formations
US4587424A (en) Method for investigating the composition of an earth formation traversed by a borehole
MY100949A (en) Logging apparatus and method for determining absolute elemental concentrations of subsurface formations.
CA2199726A1 (en) Accelerator-based methods and apparatus for measurement-while-drilling
IE822193L (en) Neutron well logging method
AU643983B2 (en) Method and apparatus for epithermal neutron porosity well logging
EP0465276B1 (en) Method for determining oil and water saturation in earth formation surrounding a borehole
US4232220A (en) Background subtraction system for pulsed neutron logging of earth boreholes
EP0387449A3 (en) Pulsed neutron porosity logging
SG5691G (en) Borehold compensation method and apparatus
US5045693A (en) Carbon/oxygen well logging method and apparatus
CA2153629A1 (en) Logging method and apparatus using a pad to measure density
US4191884A (en) Determination of water saturation in subsurface earth formations adjacent well boreholes
US4788424A (en) Method and apparatus for determining partitioning of borehole and formation constituents
US4312049A (en) Method of identifying gas, oil and water zones in a subsurface formation
MY120933A (en) Method for logging an earth formation using recycled alpha data
US3035174A (en) Silica-alumina radioactive logging
NO924168L (en) DEVELOPMENT AND PROCEDURE FOR NUCLEAR LOGGING OF A BILL
Carroll Rock properties interpreted from sonic velocity logs
EP0348260B1 (en) Carbon/oxygen well logging method and apparatus
GB1511278A (en) Measurement of subsurface formation lithology